  arma - Scilab arma library
  arma2p - extract polynomial matrices from ar representation
  armac - Scilab description of an armax process
  armax - armax identification
  armax1 - armax identification
  arsimul - armax simulation
  narsimul - armax simulation ( using rtitr)
  noisegen - noise generation
  odedi - test of ode
  prbs_a - pseudo random binary sequences generation
  reglin - Linear regression